Event: D&DCL Div 2

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Opponent	Rating	Result
Paul Williams	1696	0 - 1
Richard P Temple	1543	0 - 1
Andre Cockburn	1575	0 - 1
Vaughan WG Smith	1614	1 - 0
Mike P Maher	1624	½ - ½
Matthew Caswell	1635	0 - 1
Alex Abdullahi	1544	0 - 1
John Moughtin-Leay	1622	0 - 1

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1357 = (12853 + 400 * (1 - 6)) / 8)